Want to give your kids the best start possible for a lifetime of good dental health? The most important thing you can do is train them in effective brushing and flossing. It's more than having a nice smile and fresh breath: these hygiene tasks remove the daily buildup of bacterial plaque, the primary cause for both tooth decay and periodontal (gum) disease, which are most responsible for poor oral health.

But those aren't the only habits they should be cultivating. Here are 3 tips for helping your child develop great dental health habits.

Encourage healthy eating. Teeth and gums are like other parts of the body: they need the "building blocks" found in nutritious foods to help grow strong, healthy tissues. By focusing on a diet leaner on processed items and richer in whole, less-processed vegetables, meats and dairy products, you'll be helping your child build strong defenses against dental disease.

Keep sugary snacks under control. Of all the items in your child's diet, sugar could have the greatest impact on their teeth. Disease-causing bacteria thrive on this particular carbohydrate, multiplying and producing mouth acid—the main enemy of tooth enamel—as a byproduct. So, limit sugary snacks as much as possible, opting instead for more nutritional between-meal treats. In fact, try to make sure they only consume sugary treats at mealtime, not in between.

Encourage an end to thumb-sucking or pacifiers by age 3. Most infants and very young children suck their thumbs or, alternatively, a pacifier. There's no harm in this habit unless it extends into later childhood where it could affect their bite. You can avoid this outcome by encouraging your child with mainly positive reinforcement to stop sucking their thumbs or other objects before their third birthday. Your dentist can also help with tips and support in those efforts.